A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5999-01-551-1829
NSN 4140-01-531-7375
NSN 6240-00-633-1243
NSN 6620-01-430-2212
NSN 5960-01-412-0619
NSN 6240-00-839-5118
NSN 5920-00-913-0475
NSN 5915-00-056-5007
NSN 5905-00-762-8607
NSN 5895-00-376-5074
NSN 6150-01-648-2430
NSN 6145-01-022-5652